maschine3: wip colour decoding, grid lights fb
maschine3: wip colour decoding, grid lights fb

A work in progress commit, identified that the coding of
the lights makes 16 colours available at 4 different brightness
levels. The lowest 2 bits are the 4 brightness levels, and the
4 bytes above that indicate the hue of the colour. A simple algo
to set colour based on hue and brightness as follows:

    uint8_t led_colour = (hue << 2) | brighness;

Signed-off-by: Harry van Haaren <6e1296516ee88185cd60d9725251227ece1af74d@gmail.com>

openAVproductions/openAV-Ctlra